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Silicone paint

2015-06-03View Original

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\n\nPolysiloxane liquids are called silicone oils, polysiloxane rubbers are called silicone rubbers, and polysiloxane resins are called silicone resins. The main chain structure of polysiloxanes is Si-O-Si, which is essentially the same as that of quartz; the difference lies in the organic groups attached to its side chains. Polysiloxane anti-corrosion paint uses fluorine-modified polymer resin as its main base material; various corrosion-resistant pigments, fillers, additives, and solvents are added and ground together to form Component 1, while Component 2 is the curing agent. Polysiloxane anti-corrosion paint boasts ultra-long weather resistance, excellent light and color retention, acid resistance, oil resistance, salt spray resistance, strong resistance to contamination, high strength and gloss, as well as excellent adhesion. Its coating is dense, it has good resistance to freeze-thaw cycles, and it also possesses great decorative qualities. It is widely used for anti-corrosion coating in oil and chemical plant pipelines, equipment storage tanks, reaction vessels, highway guardrails, high-end buildings, and more. Types of silicone coatings: The commercially available silicone coatings that are currently in use mainly fall into two categories: epoxy silicone coatings and acrylic silicone coatings. The main types include weather-resistant and corrosion-resistant epoxy floor coatings, chemical-resistant silicone coatings, single-component acrylic silicone paints, and two-component acrylic silicone paints. Epoxy zinc-rich primers are widely used in anti-corrosion coatings; they are user-friendly, have good corrosion resistance, strong adhesion, and are resistant to alkalis and solvents. However, their biggest drawback is their poor weather resistance – in outdoor environments, traditional epoxy coatings quickly become dusty, fade, and lose their luster. To maintain color and gloss, it is common practice to apply a layer of aliphatic polyurethane coating on top. The first generation of epoxy silicone coatings offered excellent weather resistance while still retaining their corrosion resistance and chemical resistance. These coatings were first successfully commercialized by the American company AMERON. A typical formula for an epoxy silicone coating allows it to be applied directly by brushing, rolling, or spraying onto sandblasted steel surfaces, as well as onto surfaces with existing paint layers. Its weather resistance is superior to that of single-layer acrylic polyurethane topcoats and chlorinated rubber coatings. In QUV-B accelerated aging tests, its weather resistance is better than that of two-layer epoxy polyurethane systems. Epoxy silicone topcoats are white in color. One of the key advantages of epoxy silicone coatings is their extremely high corrosion resistance. They are compatible with both epoxy zinc-rich primers and inorganic zinc-rich primers. Therefore, a single-layer epoxy silicone coating system can compete with two-layer epoxy polyurethane systems. In terms of corrosion resistance, epoxy silicone coatings are comparable to two-layer inorganic zinc coatings, but they offer better weather resistance.
Reply #22015-06-03
The price is indeed lower than that of fluorocarbon coatings.
Reply #32015-06-04
Epoxy polysiloxane coatings, as well as inorganic zinc epoxy polysiloxane coatings using a two-coat system, exhibit corrosion resistance comparable to that of inorganic zinc epoxy polyurethane coatings using a three-coat system, with better weather resistance
Reply #42015-06-11
Polysiloxane topcoats have excellent weather resistance and are suitable for coating large bridges and other structures. It has excellent corrosion resistance, and its overall durability in terms of corrosion protection is greater than that of fluorocarbon paints. However, there aren’t many manufacturers in the domestic market that can actually produce this product, and its cost is considerably higher than that of fluorocarbon paint. So it still needs to be promoted. . .

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